#include<stdio.h>
#include<sys/types.h>
#include<pwd.h>
#include<stdio.h>
#include<unistd.h>

int main(int argc, char *argv[])
{
  uid_t uid;
  gid_t gid;

  struct passwd *pw;
  uid = getuid();
  gid = getgid();

  printf("User is %s\n",getlogin());

  printf("User IDs: uid = %d, gid = %d\n",uid,gid);

  pw = getpwuid(uid);

  printf("UID passwd entry:\n name = %s, uid = %d, gid = %d, home = %s,shell = %s\n", pw -> pw_name,pw -> pw_uid,pw -> pw_gid,pw -> pw_dir,pw -> pw_shell);

  pw = getpwnam("root");
  printf("root passwd entry:\n");
  printf("name = %s, uid = %d, gid = %d, home = %s,shell = %s\n", pw -> pw_name,pw -> pw_uid,pw -> pw_gid,pw -> pw_dir,pw -> pw_shell);
  return 0;
}
